Вычисление параметров газотурбинного двигателя с учетом неопределенности исходных данных(Calculation of gas turbine engine parameters considering the uncertain

Abstract

When studying scientific and technical publications related to various design studies in various fields of knowledge, authors often resort to comparing calculation and experiment data. In most cases, they do not coincide to one degree or another. And the degree of “mismatch” is often considered a measure of the quality of the computational model. In addition, in the published materials one can often find studies devoted to the modernization of computational models or to the search for their settings aimed at reducing “mismatch”. The authors of such works are “convinced” that reducing the discrepancy will increase the quality of the calculation model.When analyzing the results, many researchers tried to figure out the reasons for this discrepancy; they tried to understand the nature of the errors inherent in the calculation models. Among the possible sources of “mismatch”, errors of physical models, discretization, solution of equations, initial data, and others are usually distinguished. Among the listed err